Marin City homicide victim was stabbed dozens of times

A Marin City woman who was allegedly slain by her 22-year-old son over the weekend was stabbed dozens of times in the attack, the sheriff's department said Monday.

An autopsy was planned Tuesday for Rosa Aldana, 44, who died Friday night in her apartment on Cole Drive.

The suspect, Carlos Aldana, remained at San Francisco General Hospital on Monday, said sheriff's Lt. Jamie Scardina. The suspect was shot by police after getting off a bus in San Francisco and allegedly threatening them with the bloody knife he stabbed his mother with.

The sheriff's department is researching the suspect's mental health history as it tries to determine what set off the attack.

Aldana is survived by three other children in addition to the suspect. Her other children include a 15-year-old son, a 16-year-old daughter and a 22-year-old daughter.

Flowers and candles lay outside Aldana's apartment on Monday. Blood stains were still visible on the door.

A neighbor said Aldana had lived there since early 2009 and worked at a Walmart in Oakland.

"I am all shook up about the whole thing," said the neighbor, who declined to be named. "She kept to herself, didn't talk much. ... I tried to say hello whenever I saw her pass by."

Another resident, Ricky Buquia, said Aldana was a "nice lady" who tended the community garden across the street from her apartment.

"This don't happen every day like in San Francisco and Oakland," said Buquia, who has lived in Marin City for about 40 years. "I just can't understand it."

Aldana's body was discovered when her boyfriend came home late Friday night and found the apartment soaked in blood. He rushed to the apartment of a neighbor, who called 911.

Carlos Aldana, allegedly covered in blood and carrying the knife, boarded a Golden Gate Transit bus a short time later. The bus headed south into San Francisco, and police intercepted Aldana when he got off in the Marina District.

The Marin County District Attorney's Office had filed no charges as of Monday.